de.caluga.morphium.writer

Interface Writer

All Known Implementing Classes:

BufferedWriterImpl, WriterImpl

public interface Writer

User: Stephan Bösebeck Date: 30.08.12 Time: 14:39

Interface for all morphium write accesses. Override for own use and set to MorphiumConfig

See Also:

MorphiumConfig

Method Summary

Methods

Modifier and Type	Method and Description
<T> void	delete(List<T> lst, AsyncOperationCallback<T> callback)
<T> void	delete(Query<T> q, AsyncOperationCallback<T> callback) deletes all objects matching the given query
<T> void	delete(T o, AsyncOperationCallback<T> callback)
<T> void	dropCollection(Class<T> cls, AsyncOperationCallback<T> callback)
<T> void	ensureIndex(Class<T> cls, Map<String,Object> index, AsyncOperationCallback<T> callback)
<T> void	inc(Query<T> query, String field, int amount, boolean insertIfNotExist, boolean multiple, AsyncOperationCallback<T> callback)
<T> void	inc(T toInc, String field, int amount, AsyncOperationCallback<T> callback) Increases a value in an existing mongo collection entry - no reading necessary.
<T> void	pushPull(boolean push, Query<T> query, String field, Object value, boolean insertIfNotExist, boolean multiple, AsyncOperationCallback<T> callback)
<T> void	pushPullAll(boolean push, Query<T> query, String field, List<?> value, boolean insertIfNotExist, boolean multiple, AsyncOperationCallback<T> callback)
<T> void	set(Query<T> query, Map<String,Object> values, boolean insertIfNotExist, boolean multiple, AsyncOperationCallback<T> callback) will change an entry in mongodb-collection corresponding to given class object if query is too complex, upsert might not work!
<T> void	set(T toSet, String field, Object value, boolean insertIfNotExists, boolean multiple, AsyncOperationCallback<T> callback) changes an object in DB AND in Memory...
void	setMorphium(Morphium m)
<T> void	store(List<T> lst, AsyncOperationCallback<T> callback) stores the given list of objects, should be entities or embedded
<T> void	store(T o, AsyncOperationCallback<T> callback) Stores the object, should be an entity
<T> void	storeUsingFields(T ent, AsyncOperationCallback<T> callback, String... fields) update an object using fields specified
<T> void	unset(T toSet, String field, AsyncOperationCallback<T> callback) Un-setting a value in an existing mongo collection entry - no reading necessary.
int	writeBufferCount()

Method Detail

store

<T> void store(T o,
             AsyncOperationCallback<T> callback)

Stores the object, should be an entity

Parameters:

o - - entity

store

<T> void store(List<T> lst,
             AsyncOperationCallback<T> callback)

stores the given list of objects, should be entities or embedded

Parameters:

lst - - to store

storeUsingFields

<T> void storeUsingFields(T ent,
                        AsyncOperationCallback<T> callback,
                        String... fields)

update an object using fields specified

Parameters:

ent - entity

fields - - fields

set

<T> void set(T toSet,
           String field,
           Object value,
           boolean insertIfNotExists,
           boolean multiple,
           AsyncOperationCallback<T> callback)

changes an object in DB AND in Memory... the Object toSet WILL be modified!

Parameters:

toSet - entity to set values in both in mongo and in memory

field - field

value - value to set

set

<T> void set(Query<T> query,
           Map<String,Object> values,
           boolean insertIfNotExist,
           boolean multiple,
           AsyncOperationCallback<T> callback)

will change an entry in mongodb-collection corresponding to given class object if query is too complex, upsert might not work! Upsert should consist of single and-queries, which will be used to generate the object to create, unless it already exists. look at Mongodb-query documentation as well

Parameters:

query - - query to specify which objects should be set

values - - map fieldName->Value, which values are to be set!

insertIfNotExist - - insert, if it does not exist (query needs to be simple!)

multiple - - update several documents, if false, only first hit will be updated

inc

<T> void inc(Query<T> query,
           String field,
           int amount,
           boolean insertIfNotExist,
           boolean multiple,
           AsyncOperationCallback<T> callback)

inc

<T> void inc(T toInc,
           String field,
           int amount,
           AsyncOperationCallback<T> callback)

Increases a value in an existing mongo collection entry - no reading necessary. Object is altered in place db.collection.update({"_id":toInc.id},{$inc:{field:amount}} attention: this alteres the given object toSet in a similar way

Parameters:

toInc: - object to set the value in (or better - the corresponding entry in mongo)

field: - the field to change

amount: - the value to set

setMorphium

void setMorphium(Morphium m)

delete

<T> void delete(List<T> lst,
              AsyncOperationCallback<T> callback)

delete

<T> void delete(T o,
              AsyncOperationCallback<T> callback)

delete

<T> void delete(Query<T> q,
              AsyncOperationCallback<T> callback)

deletes all objects matching the given query

Parameters:

q - the query

pushPull

<T> void pushPull(boolean push,
                Query<T> query,
                String field,
                Object value,
                boolean insertIfNotExist,
                boolean multiple,
                AsyncOperationCallback<T> callback)

pushPullAll

<T> void pushPullAll(boolean push,
                   Query<T> query,
                   String field,
                   List<?> value,
                   boolean insertIfNotExist,
                   boolean multiple,
                   AsyncOperationCallback<T> callback)

unset

<T> void unset(T toSet,
             String field,
             AsyncOperationCallback<T> callback)

Un-setting a value in an existing mongo collection entry - no reading necessary. Object is altered in place db.collection.update({"_id":toSet.id},{$unset:{field:1}} attention: this alteres the given object toSet in a similar way

Parameters:

toSet: - object to set the value in (or better - the corresponding entry in mongo)

field: - field to remove from document

dropCollection

<T> void dropCollection(Class<T> cls,
                      AsyncOperationCallback<T> callback)

ensureIndex

<T> void ensureIndex(Class<T> cls,
                   Map<String,Object> index,
                   AsyncOperationCallback<T> callback)

writeBufferCount

int writeBufferCount()